Phonograph attachment.



` phonographs, and more particularly to means HARRY 1G. WOODS, UF

(.llllUnGO, .lLLlNOlS, ASSIUNOR Ol" ONlbl'lnl'ili T() HAiiLlll S. WOODS.

PHONOGRAPH ATTACHMENT Speciiication of Letters Patent.

Patented April 13, 1909.

Application filed September 28, 190B. Serial No. 456,074.

To dit 'wlw/mf it may concern.:

Be it known that l, HARRY zen of the United States, residing at Chicago, in the county of Cook and State of illinois, have invented a certain new and useful linprovenient in llhonograph Attachments, oi' which tho following is a full, clear, concise, and exact description.

My invention relates to attachments E. Worms, citifor for regulating the volume and quality of the sound produced. lts object is to provide a simple and inexpensive device which may either bepermanently secured to the machine at the time of its manufacture or which may be readily attached to a completed machine, and which will enable the operator to control the sound to suit the conditions under which the machine is used, or to produce the best results with a particular record.

'ihe several features of myinvention may be readily understood by reference to the accompanying drawings, in Which- Figure 1 is a fragmentary View in side elevation of a phonograph provided with the attachment of my invention, parts of the machine being broken away for the sake of clearness of illustration; Fig. 2 is a plan sectional view of the end of the tapering arm, illustrating, in a partially open position, the i forni of regulator which l prefer to employ in said arm in addition to the sound regulator of my invention; Fig. 3 is a fragmentary sectional view of the horn, showing a modiied form of attachment fitting therein; and Fig. 4 is a pers ective view of t ie attachment which fits Wit in the horn.

Like parts are designated by similar refer ence characters throughout the several views.

I have shown in the drawings a well-known type of phonograph, in which a tapering arm 1 is pivotally mounted at its en arged end upon a bracket 2. extending from the box 3 o the machine. The swinging arm 4, which carries the sound reproducing mechanism 5, is mounted in the end of the arm 1. This mechanism being of well-known construction, further description thereof is unneces Ili'itting within the passage of the taperin arm 1 is a damper desi ned to coperate wit i the sound regulator o my invention. This damper is preferably of the form shown in deta in Fig; 2, Whlch consists of a disk 5, adapted to be rotated upon a pin 7 as an axis.

The pin 7 is suitably secured to the disk and extends diametricaiiy across the lace thereof. 'ihe ends oi' the pin 7 are journaled in thc arm 1, and a projecting thumb piece S provides means tor rotating the disk, and thus open# ing or closing the passage in the arm Yl through which the sound. waves reach the horn 9.

Located upon the interior of the horn 9 and cooperating with the damper (i is the sound-regulator l() oi my invention. For most purposes this latter regulator alone suiiices, but l have found that in some cases the supplemental regulator 6 is desirable as providing additional accuracy of regulation.

The sound-regulator 10 consists of a disk 11, having a peripheral flange 12, about the exterior of which is placed an annular washer 13 of soft rubber or other suitable material. The perimeter of the disk 11 has a contour similar to the interior cross-sectional contour of the horn, which is shown in the drawings as circular. The attachment 10 is inserted in the enlarged end of the funnel-shaped horn and is shoved down to a position in which a tight lit of the attachment within the horn is secured. The pliable washer 13 assists in securing such it, and Jfurther acts as a muiiler which prevents any chattering of the disk 11.

The disk 1l is provided with a passage therethrough for sound. This passa e may be in the form of a single opening 14 though other forms of passage may be provide controlled by a shutter 15, which is ivoted at 16 on the disk 11. In Fi 4 have illustrated the opening 14 comp etely closed by the shutter, while in dotted lines the shutter is shown swung away from the opengl`he handle 17 for operating the shutter may extend in a lane parallel with the disk 11, as shown in igs. 1 and 4, in which case, of course, the horn 9 is provided with a slot through which the handle projects. The handle is thus readily accessible from the exterior of the horn. In `some cases however it is preferable to bend the handle angularly outward, the end of the handle in this case extending longitudinally Within the horn, as shown in Fig. 3. When the attachment is provided with this modified 'form of shutter operating handle, it is especially adapted for attachment to a phonograph by mere insertion within the horn thereof.

The disk 11 is preferably a thin metallic disk, as, 'of various materials tested, 1 have found that the niost satisfactory results are produced when such disk is emplo ed.

I have found that by eniplo ing t .e sound regulator of my invention t ie arsh, metallic sounds counnonly produced by phono graphs are prevented, the natural tones which were used for producing a record being reproduced. l `urtherniore, Without changing the horn of the instrument, the loudness of the tones can readily be regulated to suit the fancy of the operator or to most satisfactorily reproduce each particular record.

1. The combination with a phonograph horn, of a sound regulator adapted to lit frictionally within said horn, said regulator consisting of a disk and a lateral flange thereon formed of a single integral piece, said disk being rovided with an openin therethrough, a sliutter pivoted on said dis at one side of said o ening and arran ed to swin in parallel re ation to said dlsk to regu ate the closure of said opening, and a washer of resilient material fitting over said flange.

2. A soundregulator for, phonoraphs comprising a disk having an opening t erein, a peripheral flange integral with said disk, a Washer about said flan e, a shutter for said opening, said shutter leing pivoted upon said disk and arran ed to swing over the face thereof' to regu ate the closure of said opening, and an operating handle for said shutter, said handle extending at an angle to the plane of said shutter, said regulator said regulator comprising a disk having an` opening therein, a peripheral flange integral with said disk, a washer about said flange, a shutter for said opening, said shutter being pivoted upon said disk and arranged to swing over the face thereof to regulate the closure of said o ening, and an o erating handle for said s utter, said hand e being bent away from said disk at an angle to the plane of said shutter and thereby adapted to ie wholly Within the interior of said horn.

In Witness whereof, I hereunto subscribe my name this 25th day of September, A. D., 1908.

HARRY E. WOODS.

Witnesses GEORGE E. FOLK, ALFRED H. MOORE. 

